{"product_id":"acdelco-rtv-engine-sealant-gm-original-equipment-5-3-oz-cartridge-high-viscosity-quick-curing-liquid-gasket","title":"ACDelco RTV Engine Sealant GM Original Equipment 5.3 oz Cartridge — High-Viscosity, Quick-Curing Liquid Gasket","description":"\u003cp\u003e\u003cstrong\u003eACDelco GM Original Equipment 10-2010 RTV Engine Sealant (12378521) is a high-viscosity, quick-curing gasket maker formulated to seal oil- and coolant-exposed engine joints and components.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eMade to GM OE standards and supplied in a 5.3 oz cartridge for use with common caulking guns, this RTV (room-temperature-vulcanizing) sealant bonds to metal and many composite surfaces, forming a durable gasket where preformed gaskets are worn or unavailable. It cures as it reacts with air, allowing for rapid assembly and minimal downtime. Technicians and home mechanics rely on ACDelco parts for fit and consistency across a broad range of engine sealing tasks.\u003c\/p\u003e\n\n\u003ch3\u003eWhat engine parts can I use this sealant on?\u003c\/h3\u003e\n\u003cp\u003eThis RTV is suitable for numerous engine joints where a dependable liquid gasket is required. It adheres well to aluminum, cast iron, and most polymer surfaces commonly found in modern engines.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOil pans and sump seams\u003c\/li\u003e\n  \u003cli\u003eFront and rear timing covers\u003c\/li\u003e\n  \u003cli\u003eValve\/camshaft covers and cam seals\u003c\/li\u003e\n  \u003cli\u003eIntake and exhaust manifold ends, t-joints, and corners\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow fast can I reassemble and run the engine after applying the sealant?\u003c\/h3\u003e\n\u003cp\u003eThe product is designed for relatively quick handling: it skins and begins to cure when exposed to air, enabling reassembly in a short period. In many cases, the engine may be refilled with oil or coolant immediately after torqueing fasteners, but full cure time depends on bead thickness and ambient conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eQuick skin formation on exposure to air\u003c\/li\u003e\n  \u003cli\u003eShort handling time allows fast reassembly\u003c\/li\u003e\n  \u003cli\u003eFull cure time varies with bead size and temperature\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat makes this ACDelco sealant different from other RTVs?\u003c\/h3\u003e\n\u003cp\u003eThis GM Original Equipment-branded RTV is formulated to meet factory-level specifications for sealing engine components, balancing viscosity for easy application with enough body to stay in place on vertical surfaces. It’s engineered for automotive conditions where oil and coolant contact is expected.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigher viscosity for controlled bead placement\u003c\/li\u003e\n  \u003cli\u003eCures to a resilient gasket when exposed to air\u003c\/li\u003e\n  \u003cli\u003eOEM-quality formulation tuned for engine environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I apply and prepare surfaces for best results?\u003c\/h3\u003e\n\u003cp\u003eClean, dry surfaces ensure the strongest bond; remove old gasket material, oil, grease, and coolant residue before applying. Use a steady bead from a caulking gun and allow appropriate cure time for thicker applications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eScrape and clean mating surfaces thoroughly\u003c\/li\u003e\n  \u003cli\u003eApply even continuous bead; avoid excessive overfill\u003c\/li\u003e\n  \u003cli\u003eTorque fasteners to manufacturer specs after initial cure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Mechanics and DIYers who need a reliable, OEM-grade liquid gasket for automotive engine repairs—especially when replacing or repairing oil pans, covers, manifolds, or other engine joints. This 5.3 oz cartridge fits standard dispensers, making it practical for workshop use and at-home repairs where a precision, durable seal is required.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this RTV safe for use with engine oil and coolant?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This ACDelco RTV is formulated to resist oil and coolant exposure once cured; allow appropriate cure time for best performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I torque bolts and refill fluids immediately after applying?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: You can often torque and refill shortly after assembly due to quick skinning, but full cure depends on bead thickness and ambient temperature.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ACDelco","offers":[{"title":"Default Title","offer_id":48086888841374,"sku":"B007Q0ZOHQ","price":32.26,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/acdelco-sealant-front-packaging.jpg?v=1785909202","url":"https:\/\/northtrailauto.ca\/products\/acdelco-rtv-engine-sealant-gm-original-equipment-5-3-oz-cartridge-high-viscosity-quick-curing-liquid-gasket","provider":"North Trail Auto","version":"1.0","type":"link"}